Overview
The PTN78020AAH is a high-efficiency, adjustable positive-to-negative voltage regulator module produced by Texas Instruments. It is part of the PTN78020A series, which represents the third generation of high-performance power modules designed for industrial use. This module is smaller and lighter than its predecessors, offering either similar or improved electrical performance characteristics. It is packaged in a caseless, double-sided format with excellent thermal characteristics and is compatible with TI's roadmap for RoHS and lead-free compliance.
Key Specifications
| Parameter | Min | Max | Unit | |
|---|---|---|---|---|
| Input Voltage Range | 9 | 29 | V | |
| Output Voltage Range | -15 | -3 | V | |
| Output Current | 0.1 | 4 | A | |
| Output Power | 25 | W | ||
| Efficiency | Up to 87% | % | ||
| Operating Temperature | -40 | 85 | °C | |
| Switching Frequency | 440 | 550 | 660 | kHz |
| Weight | 7.3 | grams |
Key Features
- Wide-input voltage range (9 V to 29 V)
- Adjustable output voltage (-15 V to -3 V) using a single external resistor
- High efficiency (up to 87%)
- Output current limit and overtemperature shutdown
- Undervoltage lockout
- Surface-mount package available
- Excellent thermal characteristics
- RoHS and lead-free compliant
Applications
- General-purpose industrial controls
- HVAC systems
- Test and measurement equipment
- Medical instrumentation
- AC/DC adaptors
- Vehicles, marine, and avionics
Q & A
- What is the input voltage range of the PTN78020AAH?
The input voltage range is from 9 V to 29 V. - What is the adjustable output voltage range?
The output voltage can be adjusted from -15 V to -3 V. - What is the maximum output current?
The maximum output current is 4 A. - What is the maximum output power?
The maximum output power is 25 W. - How is the output voltage adjusted?
The output voltage is adjusted using a single external resistor connected between the VO Adjust control (pin 4) and the output voltage (pin 7). - What are the operating temperature limits?
The operating temperature range is from -40°C to 85°C. - Does the PTN78020AAH have built-in protection features?
- What type of package is available for the PTN78020AAH?
The module is available in a surface-mount package.- Is the PTN78020AAH RoHS and lead-free compliant?
- What are the recommended capacitors for the input and output?
A minimum of 18.8-µF ceramic capacitance and 100-µF nonceramic capacitance is required at the input, and 100-µF of output capacitance is required for proper operation. - What type of package is available for the PTN78020AAH?
